Seiko Cal. 5631 - 572

The Seiko 5631-572 represents an important milestone in Seiko's 1970 lineup. Powered by the 5631 caliber with 28j jewels beating at 21,600 bph, it delivers a 62 hours power reserve. [seikata-wm-508c57a7c1b7]

Also known as: Emperor, Arnie

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

35mm

Case Thickness

10.4mm

Lug Width

18mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

70m

Dial Color

White

Jewels

28j

Frequency

21,600 bph

Power Reserve

62 hours

Year

1970

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